The Probability That Daughters of a Mother Who Attends Church

Multiple Choice

The probability that daughters of a mother who attends church regularly will also attend church regularly is 0.9, whereas the probability that daughters of a mother who does not attend regularly will attend regularly is 0.2. ​
If a woman attends church regularly and has one daughter, who in turn has one daughter, what is the probability that the granddaughter attends church regularly? Round your answer to two decimal places.
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A) 0.66
B) 0.42
C) 0.17
D) 0.81
E) 0.83